Transaction not yet indexed

21Ex6wfaRXqCmkgMP4HPrGmC9jZEE2QXTakhRVCRa3FuJDWF2va15Pcq5XNJW2UNEn6d7Udtff5unMnW3wYwK1TD

The transaction signature is valid but not yet indexed by this RPC node, or the transaction failed before inclusion.